A mildly varied driving style, one without excesses of dogging or flogging will usually yield the longest system life. In a Nissan 12V with a 5spd, I often touched the redlne near 7k, and at 110,000 mi. I replaced 8 bent valves, a timing chain set, and an oil pump cover. The replacement sets lasted another 50,000 with the same results, while an acquaintance with a similar car put over 180,000 with no engine issues.

My current '85 190E had 120,000 abused miles when I got it, and I've been paying for that abuse ever since. My only reasons remaining for near WOT ( wide open throttle) behavior are passing, or uphill performance.